The Triumph Stag, An Independent Reference Archive

The Stag Archive is a free, independent reference for the Triumph Stag, written and maintained by Jon Cosson, a classic-car enthusiast in North Yorkshire who owns and runs a Stag of his own. That car, KKH 295N, appears throughout the site, and the work done on it informs what is written here. The archive grows out of ownership, not out of a showroom or a parts counter.

It covers the whole car. The history and variants section traces the Stag from a 1965 Michelotti show special to the end of production in 1977, through the Mk1 and Mk2, the transmissions and the production figures. The V8 engine section explains how Triumph's 3.0-litre V8 was designed, why it earned its reputation, and why a sorted one is dependable today. Because cooling sits behind most of that reputation, overheating gets a pillar of its own, and fault finding works symptom by symptom. For anyone choosing a car, the buying guide sets out what to inspect and what to walk away from. For anyone already running one, ownership covers servicing, storage and seasonal use, the how-to guides walk through the jobs themselves, and the journal records the archive's own Stag in use. The FAQ gathers the questions people actually ask.

What makes the archive different is stated plainly. It is free, and it carries no advertising, no affiliate links and no paid placements, and never will. It is written by an owner rather than a seller, so nothing here is shaped by something being for sale. It is built from factory workshop manuals, parts lists, road-test data and club archives rather than repeated folklore, and where a figure cannot be verified it says so instead of guessing. Where sources disagree, the disagreement is noted. It covers the whole car rather than only the parts that sell products.

Errors get corrected. If you spot a wrong date, a mislabelled part or a disputed figure, the contact page is the way in, and corrections are welcomed.